2025 ISAKOS Biennial Congress ePoster
Knee Pain Frequently Improves 1 Year After Foot or Ankle Surgery
David Carmody, MBBS FRACS, Sydney, NSW AUSTRALIA
Kaka Martina, RN- PhD Candidate, Wollstonecraft, NSW AUSTRALIA
Lucy J. Salmon, PhD, Sydney, NSW AUSTRALIA
North Sydney Orthopaedic and Sports Medicine Centre, Sydney, New South Wales, AUSTRALIA
FDA Status Cleared
Summary
Knee pain was reported by 1 in 3 undergoing foot surgery, and significantly improved after foot surgery in up to 54%. Those with preoperative knee pain experienced at least equivalent improvement in foot related symptoms and mobility compared to those without knee pain.
ePosters will be available shortly before Congress
Abstract
Introduction
Osteoarthritis frequently affects multiple joints through the lower limbs. This study sought to examine the incidence of knee pain in subjects undergoing foot or ankle surgery and determine if knee symptoms improved following foot or ankle surgery
Methods
61 subjects undergoing foot or ankle surgery completed patient reported outcomes measures (PROMs) preoperatively and 12 months after surgery including the Foot and Ankle Outcome Score (FAOS) and the Knee Osteoarthritis Outcome JR Scores (KOOS), EQ5D, and satisfaction.
Results
The mean age of the cohort was 64 years (range 25-85), and 61% were male. The proportion reporting knee pain significantly reduced after surgery for the activities of stairs (p=0.017), standing (p=0.017), and straightening the knee (p=0.017). A small magnitude but statistically significant increase in the median KOOS Knee Score from 92 before surgery to 100 after surgery (p=0.021) was observed. Any knee pain was reported in 34% before, and 28% at 12 months after foot surgery. Of those reporting preoperative standing pain, 54% reported no standing knee pain with 12 months after foot surgery. The presence of preoperative knee pain did not affect post operative satisfaction (p=0.881), or the proportion who would undergo the same surgery again (p=0.881). Those with preoperative knee pain had an equivalent distribution of change in FAOS at 12 months for pain (p=0.927), symptoms (p=0.188), ADL (p=0.558) and quality of life (p=0.201) compared to those without preoperative knee pain.
Conclusion
Knee pain was reported by 1 in 3 undergoing foot surgery, and significantly improved after foot surgery in up to 54%. Those with preoperative knee pain experienced at least equivalent improvement in foot related symptoms and mobility compared to those without knee pain.